EMD Thrust Washer Repair or Replacement? A Practical Guide for 567, 645, and 710 Engines
A worn thrust washer can affect crankshaft end play, oil-film stability, and engine reliability. The correct solution depends on measured wear and approved EMD limits. Light surface marks may allow limited corrective work. Deep scoring, cracking, distortion, or excessive end play usually requires replacement. This decision should never rely on visual inspection alone. Technicians must check the washer, crankshaft thrust faces, caps, shims, oil passages, and connecting-rod movement. The 567, 645, and 710 engine families may have different specifications and service instructions. Always use the applicable maintenance manual before removing material or installing replacement parts. Thrust washer failure often reflects another mechanical or lubrication problem. Contaminated oil can carry abrasive particles across the bearing surface. Low oil flow can create heat and metal transfer. Misalignment can produce uneven contact and rapid wear. Excessive axial loading can increase crankshaft mov...